Pm.sample gets stuck after init with cores > 1

models that are slightly big and have a large number of observations

@lucianopaz Would my linear model with 70-odd predictors and O(1000) observations be too large to copy w/o crashing? That’s still a small model in my book. I was hoping to scale this to something like 200 predictors and O(10^5) observations. I’m running this as a batch job on a supercomputer so the core count and/or mem footprint are not a limitation.